package springmvc_demo.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Configuration
public class MyInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,Object handler) throws Exception{
//        System.out.println("preHandle");
//        return true;
        Object user = request.getSession().getAttribute("username");
        if(null != user && user.equals("admin")){
            return true;
        }
        response.sendRedirect("/login");
        return false;
    }

    @Override
     public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modAndView)
        throws Exception{
//        System.out.println("postHandle");
    }
    @Override
    public void afterCompletion(HttpServletRequest request,HttpServletResponse response,Object handler,Exception ex)
        throws Exception{
//        System.out.println("afterCompletion");
    }

}
